ReadonlySEED_#6.300: crypto-seed, superseded by TAG_SEED.
ReadonlyEC_#6.306: crypto-eckey, superseded by TAG_EC_KEY.
ReadonlySSKR_#6.309: crypto-sskr, superseded by TAG_SSKR_SHARE.
ReadonlyHDKEY_#6.303: crypto-hdkey, superseded by TAG_HDKEY.
ReadonlyDERIVATION_#6.304: crypto-keypath, superseded by TAG_DERIVATION_PATH.
ReadonlyUSE_#6.305: crypto-coin-info, superseded by TAG_USE_INFO.
ReadonlyOUTPUT_#6.307: crypto-output, superseded by TAG_OUTPUT_DESCRIPTOR.
ReadonlyPSBT_#6.310: crypto-psbt, superseded by TAG_PSBT.
ReadonlyACCOUNT_#6.311: crypto-account, superseded by TAG_ACCOUNT_DESCRIPTOR.
The legacy tag set; see LEGACY_TAGS.